WO2019215768A1 - Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus - Google Patents

Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus Download PDF

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Publication number
WO2019215768A1
WO2019215768A1 PCT/IT2018/000067 IT2018000067W WO2019215768A1 WO 2019215768 A1 WO2019215768 A1 WO 2019215768A1 IT 2018000067 W IT2018000067 W IT 2018000067W WO 2019215768 A1 WO2019215768 A1 WO 2019215768A1
Authority
WO
WIPO (PCT)
Prior art keywords
infill
synthetic
rachis
surface area
per unit
Prior art date
Application number
PCT/IT2018/000067
Other languages
English (en)
Other versions
WO2019215768A9 (fr
Inventor
Marina NUSCA
Original Assignee
MAR.PROJECT S.r.l
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAR.PROJECT S.r.l filed Critical MAR.PROJECT S.r.l
Priority to JP2020563694A priority Critical patent/JP7296988B2/ja
Priority to PCT/IT2018/000067 priority patent/WO2019215768A1/fr
Priority to EP18743873.4A priority patent/EP3791019B1/fr
Priority to EA202092625A priority patent/EA202092625A1/ru
Priority to CN201880093267.6A priority patent/CN112189068A/zh
Priority to CA3099390A priority patent/CA3099390A1/fr
Publication of WO2019215768A1 publication Critical patent/WO2019215768A1/fr
Publication of WO2019215768A9 publication Critical patent/WO2019215768A9/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds

Definitions

  • the present invention relates to infill materials for synthetic turfs and to synthetic turfs obtained by using such infill materials.
  • the invention furthermore, relates to a method for making such synthetic turfs.
  • a synthetic turf essentially consists of a mat made of plastic material to which blades of synthetic material, also called “bristles”, are fixed in such a way to form a synthetic turf.
  • the blades made of synthetic material are knitted to the mat by means of known processes that allow to obtain a warp of blades, which are close to each other according to the needs.
  • an infill material is distributed, also simply called “infill”. This is, usually, granular-shaped, and is selected both according to the kind of sport to which the synthetic turf is destined, for example soccer, hockey, cricket, rugby, but also according to the weather conditions that are more frequent where the synthetic turf is installed.
  • the infill material provides a draining action by adjusting the drainage of rainwater or of irrigation water, protects the mat assuring to the synthetic turf a high duration, and especially gives to the turf mechanical, physical and technological features typical of the natural turf.
  • an infill material is, in particular, the elasticity of the ground for the user, the rebound of the ball, the capacity of absorption of the hits when falling down, tensile and torque resistance to the force caused by the shoe, the resistance against the compression, to the penetration of external bodies, as well as the capacity of absorption and drainage of water in case of meteorological and environmental events.
  • the drainage action of the synthetic turf is, usually, carried out by a base portion, or "stabilizing infill", essentially constituted of sand. Instead, the elasticity of the synthetic turf is, usually, guaranteed by the presence of granules of rubber that are concentrated in the upper portion of the turf, or "performance infill”.
  • stabilizing infill essentially constituted of sand.
  • performance infill An example of a similar infill material is disclosed in CJS2002/081399.
  • the synthetic turfs of known type containing rubber and sand have many drawbacks. Firstly, owing to the compression caused by trampling, or by settling of the drainage water percolation, eventually the layer of sand tends to become compacted thus losing its drainage properties. Therefore, in particular in case of abundant rainfall, the synthetic turf is not able to drain away the rain water and is subjected to flooding. This causes a random and turbulent mixture of the infill material, in particular at the upper layers of the same, that is, therefore, shifted from the correct position within the infill. In particular, the infill material, in the time, provides zones where the material dragged by water concentrates, and other zones, instead, completely, or however impoverished of the same material. Therefore, the synthetic turf loses its original structure and, accordingly, the physical, mechanical and drainage features that it had at the moment of laying.
  • an object of the present invention to provide an infill material for synthetic turfs that is able to perform an effective drainage of water.
  • an infill material for synthetic turfs comprising :
  • a stabilizing infill comprising a predetermined quantity per unit surface area of vegetable material of rachis of cereal ear not coated by a layer, or film, of coating material, said predetermined quantity per unit surface area being set between 2 kg/m 2 and 15 kg/m 2 ;
  • a performance infill positioned above said stabilizing infill and constituted of polymeric material with elastomeric properties in granular form in a predetermined quantity per unit surface area.
  • rachis of cereal ear in the stabilizing infill allows to avoid the above mentioned drawbacks of synthetic turfs of prior art.
  • the material constituted of rachis of cereal ear preferably corn-cob of maize, has, in particular, the property of absorbing high quantity of water "swelling", and then of releasing, in the drier and hotter seasons, the absorbed moisture in the surrounding environment. Consequently, the rachis of cereal ear acts as a "lung" for the synthetic turf, which incorporates it, because, as anticipated above, it absorbs the water, or the moisture, in excess, increasing its volume, and then gradually reducing it by releasing the moisture, when the climatic conditions return drier and the ambient temperature increases.
  • the rachis of cereal ear provides, in fact, a high porosity and is subjected to alternating cycles of expansion, and of compression, or in any case of reduction of volume. Therefore, the whole infill material, and in particular the performance infill, is subjected to a decompacting action that allows to keep the infill material tilled, and preserving substantially intact in the time the physical properties of the infill.
  • the material constituted of rachis of cereal ear, in particular corn-cob is able to absorb a high quantity of moisture, for example during rain and irrigation interventions, and, then, to release the above mentioned moisture in the hotter seasons, thus obtaining a thermal balance of the turf.
  • corn-cob has a water absorption capacity that is about 138%. Such properties avoid excessive heating of the performance infill, in particular of the above mentioned plastic material having elastomeric properties, during the hotter seasons .
  • the stabilizing infill furthermore, comprises a predetermined quantity per unit surface area of sand.
  • the stabilizing infill can provide a mixture of a predetermined percentage by volume of said vegetable material of rachis of cereal ear and a predetermined percentage by volume of sand.
  • the mixture of vegetable material of rachis of cereal ear and sand has the following composition :
  • the infill material can comprise a predetermined quantity per unit surface area of the above mentioned mixture, said predetermined quantity per unit surface area being set between 2.5 kg/m 2 and 15 kg/m 2 .
  • the vegetable material constituted of rachis of cereal ear is corn-cob, i.e. rachis of maize.
  • corn cob i.e. the rachis of maize
  • the stabilizing infill of the infill material can comprise:
  • a second layer positioned on said first layer of sand and constituted of the above mentioned vegetable material of rachis of cereal ear.
  • the first layer can be constituted of a predetermined quantity per unit surface area of sand, said predetermined quantity being set between 10 kg/m 2 and 25 kg/m 2 .
  • the second layer can be constituted of a predetermined quantity per unit surface area of the above mentioned vegetable material of rachis of cereal ear, said predetermined quantity per unit surface area being set between 2 kg/m 2 and 5 kg/m 2 .
  • the above mentioned plastic material having elastomeric properties in granular form of the performance infill is selected from the group consisting of: styrene-butadiene rubber, or "SBR", a thermoplastic material, an ethylene-propylene-diene monomer, or rubber "EPDM”, polyvinyl chloride, or "PVC”, a synthetic organic material, or a combination thereof.
  • SBR styrene-butadiene rubber
  • EPDM polyvinyl chloride
  • PVC synthetic organic material
  • the above mentioned synthetic organic material is a mixture of a plastic material with elastomeric properties, and an organic material of vegetable origin, preferably selected from the group comprised of coconut and cellulose.
  • the vegetable material constituted of rachis of cereal ear, in particular corn-cob has a granulometry set between 0.3 mm and 5.0 mm.
  • sand a material having a mineralogical composition, for example siliceous sand, sand of pumice, sand of lapillus, zeolite, vermiculite, etc.
  • the performance infill can be constituted of only vegetable material of rachis of cereal ear in a predetermined quantity per unit surface area set between 2 kg/m 2 and 8 kg/m 2 .
  • the predetermined quantity per unit surface area of polymeric material with elastomeric properties in granular form, of the infill material is set between 8 kg/m 2 and 18 kg/m 2 .
  • a synthetic turf comprises: a mat having a first face and a second face opposite to the first face;
  • a method for making a synthetic turf comprises the steps of:
  • said infill material comprising:
  • a stabilizing infill comprising a predetermined quantity per unit surface area of vegetable material of rachis of cereal ear not coated with a film, or layer, of coating material, said predetermined quantity per unit surface area being set between 2 kg/m 2 and 15 kg/m 2 ;
  • the blades made of synthetic material can comprise smooth blades, or wavy blades, or smooth blades alternating to wavy blades.
  • the mat can provide a plurality of holes arranged to put in communication said first face and said second face, in such a way to allow the water to flow under the mat.
  • a stabilizing infill for infill materials for synthetic turfs comprises:
  • Fig. 1 diagrammatically shows a cross sectional view of a possible exemplary embodiment of a synthetic turf obtained by using the infill material, according to the invention
  • Fig. 2 diagrammatically shows a cross sectional view of an alternative embodiment of synthetic turf of figure 1;
  • Fig. 3 diagrammatically shows a cross sectional view of a possible alternative embodiment of synthetic turf of figure 1
  • Fig. 4 diagrammatically shows a front elevational perspective view provided with a portion removed of a possible embodiment of a sack containing a mixture, according to the invention, that can be used for making the stabilizing infill;
  • Fig. 5 diagrammatically shows an enlargement of the mixture contained within the sack of figure 4 in order to highlight some characteristics.
  • a synthetic turf 1 comprises a mat 2, which provides a face 2a, which, in use, is arranged adjacent to the surface to be coated, and a face 2b opposite to face 2a.
  • the synthetic turf 1 comprises, furthermore, a plurality of blades, or bristles, 3 made of synthetic material that are fixed to mat 2, for example by means of gluing, or stitching.
  • Above the face 2b of mat 2 is, furthermore, present an infill material 10 arranged all around the blades 3 made of synthetic material.
  • the infill material 10 provides a lower portion, or stabilizing infill 11, and an upper portion, or performance infill 12 positioned above the stabilizing infill 11.
  • the performance infill 12 is essentially constituted of a plastic material having elastomeric properties, preferably selected between styrene-butadiene rubber, or "SBR", a thermoplastic material, an ethylene-propylene-diene monomer, or "EPDM” rubber, polyvinyl chloride, or "PVC", a synthetic organic material, or a combination thereof.
  • the above mentioned synthetic organic material can be a mixture of a plastic material having elastomeric properties, and of an organic material of vegetable origin, preferably selected between coconut and cellulose, or a combination thereof.
  • the above mentioned mixture is appropriately extruded in order to obtain granules of the above mentioned synthetic organic material .
  • the above mentioned plastic material having elastomeric properties in granular form can be of black colour, or of a different colour, or can provide a mixture of two, or more colours.
  • the stabilizing infill 11 comprises a vegetable material of rachis of cereal ear not coated of a film, or layer, of coating material, in a predetermined quantity per unit surface area.
  • the above mentioned predetermined quantity per unit surface area of the above mentioned vegetable material of rachis of cereal ear is set between 2 kg/m 2 and 15 kg/m 2 , in function of the height of the synthetic grass.
  • the cereal can be maize and, therefore, the rachis of cereal ear is
  • corn-cob the vegetable material of rachis of cereal ear is not coated with a film of coating material in order to be able to absorb and to release moisture and, therefore, to alternate the above mentioned cycles of increasing and of reduction of volume that, as above disclosed, are fundamental in order to avoid an excessive heating of the material of which the performance infill is constituted.
  • the stabilizing infill 11 provides a single layer constituted only of vegetable material of rachis of cereal ear.
  • a distribution step is advantageously provides of a predetermined quantity per unit surface area of the stabilizing infill set between 2 kg/m 2 and 8 kg/m 2 on the above mentioned mat 2.
  • the material of rachis of cereal ear carries out an auto-decompacting action that allows to keep the stabilizing infill tilled, and of preserving substantially intact in the time, the physical features, in particular the drainage capacity.
  • the stabilizing infill 11 provides, instead, a lower layer 11a of sand, above of which is positioned a layer lib of the above mentioned material of rachis of cereal ear, preferably corn-cob.
  • the above mentioned predetermined quantity per unit surface area of sand of the stabilizing infill will be mainly concentrated, in this case, in the first layer, i.e. in the lower layer 11a, whilst the above mentioned predetermined quantity per unit surface area of vegetable material constituted of rachis of cereal ear will be mainly concentrated in the second layer, i.e. the upper layer lib.
  • the material of rachis of cereal ear prevents the sand layer 11a and, therefore, the whole stabilizing infill 11 and, therefore, the synthetic turf, from being compacted.
  • the first layer 11a is constituted of a predetermined quantity per unit surface area of sand set between 10 kg/m 2 and 25 kg/m 2 .
  • the second layer is, instead, constituted of a predetermined quantity per unit surface area of the above mentioned vegetable material of rachis of cereal ear set between 2 kg/m 2 and 5 kg/m 2 .
  • the infill material 10 provides for the stabilizing infill 11 a single layer constituted, in this case, of a mixture of sand and the above mentioned material of vegetable constituted of rachis of cereal ear.
  • the above mentioned mixture of vegetable material of rachis of cereal ear and sand is constituted for a percentage by volume set between 25% and 90% of material of rachis of cereal ear, and for a percentage by volume set between 10% and 75% of sand.
  • the predetermined quantity per unit surface area of the mixture of vegetable material of rachis of cereal ear and sand is set between 2.5 kg/m 2 and 15 kg/m 2 .
  • the combined use of sand and vegetable material of rachis of cereal ear allows to obtain a highly draining synthetic turf and, thanks to the properties of the vegetable material of rachis of cereal ear, to avoid that the sand, which is present in the stabilizing infill, can be compacted and, therefore, that the synthetic turf following to the irrigation, or to the rain, can flood.
  • the presence of vegetable material of rachis of cereal ear guarantees that, in the time, the effectiveness of the drainage action of the sand layer is maintained.
  • the mat, or support, 2 can provide drainage holes 4, having sizes such that they allow the outflow of the percolated water obtained by the drainage action of the stabilizing infill 11.
  • a sack 100 is shown, by way of example, containing a predetermined quantity of a mixture 20 of sand and vegetable material of rachis of cereal ear in the above disclosed percentage by volumes.
  • the mixture 20 is substantially "homogeneous" in the sense that the granules of the two components, that is to say of sand and of vegetable material of rachis of cereal ear, are dispersed one in the other such that it is not easily visible to the naked eye.
  • the mixture 20 can be used, in particular, for obtaining the embodiment of infill material 10 of the synthetic turf of figure 3.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Cultivation Of Plants (AREA)

Abstract

Cette invention concerne un matériau de charge (10) pour des gazons artificiels (1), comprenant une charge de stabilisation (11) constituée d'une quantité prédéterminée par unité de surface de matériau végétal du rachis d'un épi de céréale non revêtu d'un film ou d'une couche de matériau de revêtement. La quantité prédéterminée susmentionnée par unité de surface est définie entre 2 kg/m2 et 15 kg/m2. Le matériau de charge (10) fournit, en outre, une charge de performance (12) positionnée au-dessus de la charge de stabilisation (11) et constituée d'un matériau polymère ayant des propriétés élastomères sous forme granulaire en une quantité prédéterminée par unité de surface.
PCT/IT2018/000067 2018-05-09 2018-05-09 Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus WO2019215768A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2020563694A JP7296988B2 (ja) 2018-05-09 2018-05-09 合成芝のための充填材料およびそれにより得られた合成芝
PCT/IT2018/000067 WO2019215768A1 (fr) 2018-05-09 2018-05-09 Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus
EP18743873.4A EP3791019B1 (fr) 2018-05-09 2018-05-09 Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus
EA202092625A EA202092625A1 (ru) 2018-05-09 2018-05-09 Заполняющий материал для искусственных газонов и искусственные газоны, полученные таким образом
CN201880093267.6A CN112189068A (zh) 2018-05-09 2018-05-09 用于合成草皮的填充材料和由此获得的合成草皮
CA3099390A CA3099390A1 (fr) 2018-05-09 2018-05-09 Materiau de charge pour gazons artificiels et gazons artificiels ainsi obtenus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2018/000067 WO2019215768A1 (fr) 2018-05-09 2018-05-09 Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus

Publications (2)

Publication Number Publication Date
WO2019215768A1 true WO2019215768A1 (fr) 2019-11-14
WO2019215768A9 WO2019215768A9 (fr) 2020-01-02

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PCT/IT2018/000067 WO2019215768A1 (fr) 2018-05-09 2018-05-09 Matériau de charge pour gazons artificiels et gazons artificiels ainsi obtenus

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EP (1) EP3791019B1 (fr)
JP (1) JP7296988B2 (fr)
CN (1) CN112189068A (fr)
CA (1) CA3099390A1 (fr)
EA (1) EA202092625A1 (fr)
WO (1) WO2019215768A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220357154A1 (en) * 2017-01-12 2022-11-10 The Toro Company Mobile turf instrument apparatus
EP4220054A1 (fr) * 2022-01-28 2023-08-02 Sue - Sports Unified Europe, Lda Procédé de production d'un matériau de remplissage pour une surface de gazon synthétique
WO2023144621A1 (fr) * 2022-01-28 2023-08-03 Sue - Sports Unified Europe, Lda Procédé de production d'un matériau de remplissage pour une surface de gazon synthétique

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US20020081399A1 (en) * 2000-12-21 2002-06-27 Jean Prevost Synthetic grass sport surfaces
WO2012117358A1 (fr) * 2011-03-02 2012-09-07 Graneco Rubber S.R.L. Processus de production de matériau de remplissage friable
WO2014049531A2 (fr) * 2012-09-28 2014-04-03 Mar.Project S.R.L. Matériau de remplissage amélioré pour gazons synthétiques et synthétiques-naturels « hybrides » et gazons ainsi obtenus

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US20020081399A1 (en) * 2000-12-21 2002-06-27 Jean Prevost Synthetic grass sport surfaces
WO2012117358A1 (fr) * 2011-03-02 2012-09-07 Graneco Rubber S.R.L. Processus de production de matériau de remplissage friable
WO2014049531A2 (fr) * 2012-09-28 2014-04-03 Mar.Project S.R.L. Matériau de remplissage amélioré pour gazons synthétiques et synthétiques-naturels « hybrides » et gazons ainsi obtenus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220357154A1 (en) * 2017-01-12 2022-11-10 The Toro Company Mobile turf instrument apparatus
US11821726B2 (en) * 2017-01-12 2023-11-21 The Toro Company Mobile turf instrument apparatus
EP4220054A1 (fr) * 2022-01-28 2023-08-02 Sue - Sports Unified Europe, Lda Procédé de production d'un matériau de remplissage pour une surface de gazon synthétique
WO2023144621A1 (fr) * 2022-01-28 2023-08-03 Sue - Sports Unified Europe, Lda Procédé de production d'un matériau de remplissage pour une surface de gazon synthétique

Also Published As

Publication number Publication date
EP3791019C0 (fr) 2023-07-05
WO2019215768A9 (fr) 2020-01-02
EA202092625A1 (ru) 2021-04-02
CN112189068A (zh) 2021-01-05
CA3099390A1 (fr) 2019-11-14
JP2021533285A (ja) 2021-12-02
EP3791019A1 (fr) 2021-03-17
EP3791019B1 (fr) 2023-07-05
JP7296988B2 (ja) 2023-06-23

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